Device for mounting coil units on apertured supports



May 11, 1954 c. w. HEATH 7 7 DEVICE FOR MOUNTING COIL UNITS ON APERTUREDSUPPORTS Filed April 7, 1950 FIG.

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CLARENCE WILLANS HEATH,

BY PM M ATTORNEY.

Patented May 11, 1954 DEVICE FOR MOUNTING COIL UNITS ON APERTUREDSUPPORTS Clarence Willans Heath, Bleasby, England, as-

signor to United-Carr Fastener Corporation, Cambridge, Mass., acorporation of Massachusetts Application April 7, 1950, Serial No.154,641

(Cl. hi-424.8)

3 Claims. 1

This invention relates to a sheet metal device for mounting a coilformer on an apertured support and more particularly to mounting devicesof the kind including nut means adapted to make screwed engagement witha threaded rod extending from the coil former and resilient arms betweenwhich the coil formcr is adapted to be positioned and secured.

It is an object of the invention to provide an improved mounting deviceof the above-mentioned kind.

According to the present invention a sheet metal device of the kindreferred to for mounting a coil former on an apertured support comprisesan apertured base having resilient arms extending from one face thereofand formed with inwardly directed lugs for engaging a coil formerinserted between them, and integral resilient legs extending from theopposite side of the base and formed with inturned free ends providedwith nut means for engaging a screw-threaded rod of the coil former, thebase of the device having a length greater than the width of theaperture in the support whereby when it is assembled with the supportportions of the base at the inner ends of the legs form shouldersadapted to abut the adjacent face of the support.

To enable the invention to be fully understood it will now be describedwith reference to the accompanying drawing, in which:

Fig. 1 is an elevational view of a coil former mounted on a support bymeans of a mounting device according to one embodiment of the invention;

Fig. 2 is an elevational view similar to Fig. 1 but taken at an angle of90 thereto;

Fig. 3 is a side view of the mounting device;

Fig. 4 is an end view thereof, and

Fig. 5 is a plan view.

As shown in the accompanying drawing I is a support such as the panel ofa wireless set, and 2 is an oblong shaped aperture formed therein. Thepermeability tuning unit to be mounted on the panel comprises acylindrical hollow former or casing 3 in which is reciprocably mounted ascrew-threaded rod 4 carrying an iron dust core. The unit is mounted onthe panel by a sheet metal device comprising a base 5 having an aperture6 and a pair of resilient legs 1 formed integrally therefrom and bent toextend from side edge portions of one surface of the base. The free endsof the legs I are bent to extend inwardly in spaced aligned relationwith the base aperture 6 and are formed with arcuate recesses serving asnut means 8 for engaging the threads of the rod 4. The base is alsoformed with a pair of integral resilient arms 9 extending from side edgeportions of the base between the legs and from the opposite face of thebase 5. The arms 9 are longer than the legs I and extend through theaperture 2 in the support I and their free ends are inturned to providelugs It which are entered into apertures or recesses II in the wall ofthe former or casing 3. The arms t are sufiiciently resilient to permitthem to be forced apart to permit the insertion of the former 3 betweenthem and allow the lugs resiliently to engage in the aperture I I.

To assemble the parts, the arms 9 are inserted through the aperture 2until the base abuts the adjacent face of the support. As the aperture 2is of oblong shape, the arms 9 extend lengthwise of the aperture and thelegs I extend transversely thereof whereby the portion of the baseconnected with the inner ends of the legs 1 provides portions I2extending across the width of the aperture 2 and which abut the supportand prevent the mounting device being drawn axially through the aperture2. The former 3 is inserted by forcing the arms 9 apart and insertingthe former between them. The former is then moved axially towards thesupport I to enter the rod through the aperture 2 and aperture 6 in thebase of the device and into screwed engagement with the nut means 8.When the former is in fully assembled position its base spans the widthof the aperture 2 and rests on the adjacent portions of the support I,and is locked by the lugs I0 of the arms 9 engaging in the aperture I I.The unit is accordingly held against axial movement by the base of theformer and the shoulders I2 engaging opposite faces of the support I,and it is adjusted as required by screwing the rod 4 upwardly ordownwardly relative to the nut means 8.

It will be noted that the base 5 is curved, having a concave face (Fig.3) directed towards the free ends of the former engaging arms.Accordingly when the arms are forced apart to receive the former 3, asshown in Fig. 1, the curved portion of the base is flattened and thebase in tending to return to its original concave shape tends to urgethe arms inwardly more securely to engage with the apertures II.

Instead of the arms 9 engaging in slots in the former 3, they may beprovided with sharp points adapted to dig into the wall of the former 3.

What I claim is:

1. A sheet metal device for mounting a coil former on an aperturedsupport comprising: a plate-like base having a centrally disposedaperture, a pair of resilient arms extending integrally over one facethereof from opposite end edges, and a pair of resilient legs extendingintegrally over the opposite face from opposite edges intermediate saidarms, said arms being substantially narrower in width than said base andformed with inwardly directedlugsfor engaging a coil former insertedbetween themsaid legs being formed with inturned free ends provided withopposed concave edges disposed in spaced alignment to the aperture ofthe base for engaging the threads of a screw-threaded rod of -a-'coilformer, said arms being constructed and arranged-for insertion into anelongated aperture-in a support and for securing a coil former on oneface ofrsuch' a support while said base engages the other face of v thesupport on opposite sides of the aperture therein, the side edges ofsaid arms defining imaginary substantially parallel planes intersectingsaid base to define laterally extending portions thereof for engagingportions of such other face of the support adjacent the aperture throughwhich said arms may extend'for engaging a coil former and securing itagainst such one face thereof.

2. A sheet metal device in accordance with claim 1 wherein the .base hasa "concave curved cross-section along imaginary planes substantiallyparallel to the imaginary planes defined by the side edges of the arms,whereby, when a'coil former is assembled on a supportby the device, thecurved base'is slightly'fiattened and thereby exerts a; spring forcetending to urge the arms into engagement with the coil former.

3. In an installation including a support having an elongated aperture,a coil former mounted on said support with its base spanning the supportaperture and resting on one face of the support, and a screw-threadedrod projecting from the coil former and extending through the supportaperture, a sheet metal device for. mounting the coil'former on thesupport comprisinga-a platelike base having a centrally disposedaperture, a

pair of resilient arms extending over one face thereof integrallyopposite end edges, and a pair of: resilient legs extending over theopposite face thereof integrally from opposite edges intermediate saidarms,rsaidbase spanning said support aperture and engaging the facethereof opposite References Cited'in the file of this patent UNITEDSTATES'PATENTS Number Name Date 2,211,728 MacFadden Aug. 13,1940*2,267,3'?9 Tinnerman 'Dec.'23, 1941 2,326,903 Tinnerman Aug. 17,19432,386,732 Wohlhieter "Oct. 9,1945 2,434,844 Flora Jan.'20,1948

